40010205161 has 2 divisors, whose sum is σ = 40010205162. Its totient is φ = 40010205160.

The previous prime is 40010205097. The next prime is 40010205239. The reversal of 40010205161 is 16150201004.

40010205161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39102689536 + 907515625 = 197744^2 + 30125^2 .

It is a cyclic number.

It is not a de Polignac number, because 40010205161 - 2⁶ = 40010205097 is a prime.

It is a super-2 number, since 2×40010205161² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40015205161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20005102580 + 20005102581.

It is an arithmetic number, because the mean of its divisors is an integer number (20005102581).

Almost surely, 2^40010205161 is an apocalyptic number.

It is an amenable number.

40010205161 is a deficient number, since it is larger than the sum of its proper divisors (1).

40010205161 is an equidigital number, since it uses as much as digits as its factorization.

40010205161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 40010205161 its reverse (16150201004), we get a palindrome (56160406165).

The spelling of 40010205161 in words is "forty billion, ten million, two hundred five thousand, one hundred sixty-one".